<template>
  <view :style="{zIndex}" class="tui-datetime-picker">
    <view :class="{ 'tui-datetime__mask-show': isShow }" :style="{zIndex:getMaskZIndex}" catchtouchmove="stop"
          class="tui-datetime__mask" @tap="maskClick" @touchmove.stop.prevent="stop"></view>
    <view :class="{ 'tui-show': isShow }" :style="{zIndex:getPickerZIndex}" class="tui-datetime__header">
      <view :class="{ 'tui-date-radius': radius }" :style="{ backgroundColor: headerBackground }"
            catchtouchmove="stop" class="tui-picker-header" @touchmove.stop.prevent="stop">
        <view :hover-stay-time="150" :style="{ color: cancelColor }" class="tui-btn-picker"
              hover-class="tui-opacity" @tap="hide">取消
        </view>
        <view :style="{fontSize:titleSize+'rpx',color:titleColor}" class="tui-pickerdate__title">{{ title }}
        </view>
        <view :hover-stay-time="150" :style="{ color: getColor }" class="tui-btn-picker"
              hover-class="tui-opacity" @tap="btnFix">确定
        </view>
      </view>
      <view v-if="unitTop" :style="{ backgroundColor: unitBackground }" class="tui-date-header">
        <view v-if="type < 4 || type == 7 || type==8" class="tui-date-unit">年</view>
        <view v-if="(type < 4 && type>0) || type == 7 || type==8" class="tui-date-unit">月</view>
        <view v-if="type == 1 || type == 2 || type == 7 || type==8" class="tui-date-unit">日</view>
        <view v-if="type == 1 || type == 4 || type == 5 || type == 7 || type==8" class="tui-date-unit">时</view>
        <view v-if="(type == 1 || type > 3) && type!=8" class="tui-date-unit">分</view>
        <view v-if="type > 4 && type !=8" class="tui-date-unit">秒</view>
      </view>
      <view :style="{ backgroundColor: bodyBackground,height:height+'rpx' }" class="tui-date__picker-body"
            @touchstart.stop="pickerstart">
        <picker-view :key="type" :immediate-change="immediate" :value="value" class="tui-datetime__picker-view"
                     @change="change">
          <picker-view-column v-if="type < 4 || type == 7 || type==8">
            <view v-for="(item, index) in years" :key="index"
                  :class="{ 'tui-font-size_32': !unitTop && type == 7 }" class="tui-date__column-item">
              {{ item }}
              <text v-if="!unitTop" class="tui-date__unit-text">年</text>
            </view>
          </picker-view-column>
          <picker-view-column v-if="(type < 4 && type>0) || type == 7 || type==8">
            <view v-for="(item, index) in months" :key="index"
                  :class="{ 'tui-font-size_32': !unitTop && type == 7 }" class="tui-date__column-item">
              {{ formatNum(item) }}
              <text v-if="!unitTop" class="tui-date__unit-text">月</text>
            </view>
          </picker-view-column>
          <picker-view-column v-if="type == 1 || type == 2 || type == 7 || type==8">
            <view v-for="(item, index) in days" :key="index"
                  :class="{ 'tui-font-size_32': !unitTop && type == 7 }" class="tui-date__column-item">
              {{ formatNum(item) }}
              <text v-if="!unitTop" class="tui-date__unit-text">日</text>
            </view>
          </picker-view-column>
          <picker-view-column v-if="type == 1 || type == 4 || type == 5 || type == 7 || type==8">
            <view v-for="(item, index) in hours" :key="index"
                  :class="{ 'tui-font-size_32': !unitTop && type == 7 }" class="tui-date__column-item">
              {{ formatNum(item) }}
              <text v-if="!unitTop" class="tui-date__unit-text">时</text>
            </view>
          </picker-view-column>
          <picker-view-column v-if="(type == 1 || type > 3)  && type!=8">
            <view v-for="(item, index) in minutes" :key="index"
                  :class="{ 'tui-font-size_32': !unitTop && type == 7 }" class="tui-date__column-item">
              {{ formatNum(item) }}
              <text v-if="!unitTop" class="tui-date__unit-text">分</text>
            </view>
          </picker-view-column>
          <picker-view-column v-if="type > 4 && type!=8">
            <view v-for="(item, index) in seconds" :key="index"
                  :class="{ 'tui-font-size_32': !unitTop && type == 7 }" class="tui-date__column-item">
              {{ formatNum(item) }}
              <text v-if="!unitTop" class="tui-date__unit-text">秒</text>
            </view>
          </picker-view-column>
        </picker-view>
      </view>
    </view>
  </view>
</template>

<script>
export default {
  name: 'tuiDatetime',
  emits: ['cancel', 'confirm'],
  props: {
    //0-年 1-日期+时间（年月日+时分） 2-日期(年月日) 3-日期(年月) 4-时间（时分） 5-时分秒 6-分秒 7-年月日 时分秒 8-年月日+小时
    type: {
      type: [Number, String],
      default: 1
    },
    //年份区间
    startYear: {
      type: Number,
      default: 1980
    },
    //年份区间
    endYear: {
      type: Number,
      default: 2050
    },
    hoursData: {
      type: Array,
      default() {
        return []
      }
    },
    minutesData: {
      type: Array,
      default() {
        return []
      }
    },
    secondsData: {
      type: Array,
      default() {
        return []
      }
    },
    //显示标题
    title: {
      type: String,
      default: ''
    },
    //标题字体大小
    titleSize: {
      type: [Number, String],
      default: 34
    },
    //标题字体颜色
    titleColor: {
      type: String,
      default: '#333'
    },
    //"取消"字体颜色
    cancelColor: {
      type: String,
      default: '#888'
    },
    //"确定"字体颜色
    color: {
      type: String,
      default: ''
    },
    //设置默认显示日期 2019-08-01 || 2019-08-01 17:01 || 2019/08/01
    setDateTime: {
      type: String,
      default: ''
    },
    //单位置顶
    unitTop: {
      type: Boolean,
      default: false
    },
    //圆角设置
    radius: {
      type: Boolean,
      default: false
    },
    //头部背景色
    headerBackground: {
      type: String,
      default: '#fff'
    },
    //根据实际调整，不建议使用深颜色
    bodyBackground: {
      type: String,
      default: '#fff'
    },
    //单位置顶时，单位条背景色
    unitBackground: {
      type: String,
      default: '#fff'
    },
    height: {
      type: [Number, String],
      default: 520
    },
    //点击遮罩 是否可关闭
    maskClosable: {
      type: Boolean,
      default: true
    },
    zIndex: {
      type: [Number, String],
      default: 998
    }

  },
  data() {
    let immediate = true;
    // #ifdef MP-TOUTIAO
    immediate = false
    // #endif
    return {
      immediate,
      isShow: false,
      years: [],
      months: [],
      days: [],
      hours: [],
      minutes: [],
      seconds: [],
      year: 0,
      month: 0,
      day: 0,
      hour: 0,
      minute: 0,
      second: 0,
      startDate: '',
      endDate: '',
      value: [],
      isEnd: true,
      firstShow: false
    };
  },
  mounted() {
    this.$nextTick(() => {
      setTimeout(() => {
        this.initData();
      }, 20)
    })
  },
  computed: {
    yearOrMonth() {
      return `${this.year}-${this.month}`;
    },
    propsChange() {
      return `${this.type}-${this.startYear}-${this.endYear}-${this.hoursData}-${this.minutesData}-${this.secondsData}`;
    },
    getColor() {
      return this.color || (uni && uni.$tui && uni.$tui.color.primary) || '#5677fc';
    },
    getMaskZIndex() {
      return Number(this.zIndex) + 1
    },
    getPickerZIndex() {
      return Number(this.zIndex) + 2
    }
  },
  watch: {
    yearOrMonth() {
      this.setDays();
    },
    propsChange() {
      this.$nextTick(() => {
        setTimeout(() => {
          this.initData();
        }, 20);
      })
    },
    setDateTime(val) {
      if (val && val !== true) {
        setTimeout(() => {
          this.initData();
        }, 20);
      }
    }
  },
  methods: {
    stop() {
    },
    formatNum: function (num) {
      return num < 10 ? '0' + num : num + '';
    },
    generateArray: function (start, end) {
      return Array.from(new Array(end + 1).keys()).slice(start);
    },
    getIndex: function (arr, val) {
      if (!arr || arr.length === 0) return 0;
      let index = arr.indexOf(val);
      return ~index ? index : 0;
    },
    getCharCount(str) {
      let regex = new RegExp('/', 'g');
      let result = str.match(regex);
      return !result ? 0 : result.length;
    },
    //日期时间处理
    initSelectValue() {
      let fdate = ''
      if (this.setDateTime && this.setDateTime !== true) {
        fdate = this.setDateTime.replace(/\-/g, '/');
        if (this.type == 3 && this.getCharCount(fdate) === 1) {
          fdate += '/01'
        } else if (this.type == 0) {
          fdate += '/01/01'
        }
        fdate = fdate && fdate.indexOf('/') == -1 ? `2023/01/01 ${fdate}` : fdate;
      }
      let time = null;
      if (fdate) time = new Date(fdate);
      else time = new Date();
      this.year = time.getFullYear();
      this.month = time.getMonth() + 1;
      this.day = time.getDate();
      this.hour = time.getHours();
      this.minute = time.getMinutes();
      this.second = time.getSeconds();
    },
    initData() {
      this.initSelectValue();
      const type = Number(this.type)
      switch (type) {
        case 0:
          this.setYears();
          break;
        case 1:
          this.setYears();
          this.setMonths();
          this.setDays();
          this.setHours();
          this.setMinutes();
          break;
        case 2:
          this.setYears();
          this.setMonths();
          this.setDays();
          break;
        case 3:
          this.setYears();
          this.setMonths();
          break;
        case 4:
          this.setHours();
          this.setMinutes();
          break;
        case 5:
          this.setHours();
          this.setMinutes();
          this.setSeconds();
          break;
        case 6:
          this.setMinutes();
          this.setSeconds();
          break;
        case 7:
          this.setYears();
          this.setMonths();
          this.setDays();
          this.setHours();
          this.setMinutes();
          this.setSeconds();
          break;
        case 8:
          this.setYears();
          this.setMonths();
          this.setDays();
          this.setHours();
          break;
        default:
          break;
      }
      this.$nextTick(() => {
        setTimeout(() => {
          this.setDefaultValues();
        }, 0)
      })
    },
    setDefaultValues() {
      let vals = []
      // 1-年月日+时分 2-年月日 3-年月 4-时分 5-时分秒 6-分秒 7-年月日 时分秒 8-年月日+小时
      const year = this.getIndex(this.years, this.year);
      const month = this.getIndex(this.months, this.month)
      const day = this.getIndex(this.days, this.day)
      const hour = this.getIndex(this.hours, this.hour)
      const minute = this.getIndex(this.minutes, this.minute)
      const second = this.getIndex(this.seconds, this.second)
      const type = Number(this.type)
      switch (type) {
        case 0:
          vals = [year]
        case 1:
          vals = [year, month, day, hour, minute]
          break;
        case 2:
          vals = [year, month, day]
          break;
        case 3:
          vals = [year, month]
          break;
        case 4:
          vals = [hour, minute]
          break;
        case 5:
          vals = [hour, minute, second]
          break;
        case 6:
          vals = [minute, second]
          break;
        case 7:
          vals = [year, month, day, hour, minute, second]
          break;
        case 8:
          vals = [year, month, day, hour]
          break;
        default:
          break;
      }
      if (this.value.join(',') === vals.join(',')) return;
      setTimeout(() => {
        this.value = vals;
      }, 200);

    },
    setYears() {
      this.years = this.generateArray(this.startYear, this.endYear);
    },
    setMonths() {
      this.months = this.generateArray(1, 12);

    },
    setDays() {
      if (this.type == 3 || this.type == 4) return;
      let totalDays = new Date(this.year, this.month, 0).getDate();
      totalDays = !totalDays || totalDays < 1 ? 1 : totalDays
      this.days = this.generateArray(1, totalDays);
    },
    setHours() {
      if (this.hoursData && this.hoursData.length > 0) {
        this.hours = this.hoursData;
      } else {
        this.hours = this.generateArray(0, 23);
      }
    },
    setMinutes() {
      if (this.minutesData && this.minutesData.length > 0) {
        this.minutes = this.minutesData
      } else {
        this.minutes = this.generateArray(0, 59);
      }
    },
    setSeconds() {
      if (this.secondsData && this.secondsData.length > 0) {
        this.seconds = this.secondsData;
      } else {
        this.seconds = this.generateArray(0, 59);
      }
    },
    show() {
      this.firstShow = true
      setTimeout(() => {
        this.isShow = true;
        // #ifndef MP || H5
        this.value = []
        this.$nextTick(() => {
          setTimeout(() => {
            this.value = [...this.value]
          }, 50)
        })
        // #endif
      }, 50);
    },
    hide() {
      this.isShow = false;
      this.$emit('cancel', {});
    },
    maskClick() {
      if (!this.maskClosable) return;
      this.hide()
    },
    change(e) {
      if (!this.firstShow) return;
      this.value = e.detail.value;
      const type = Number(this.type)
      switch (type) {
        case 0:
          this.year = this.years[this.value[0]];
          break;
        case 1:
          this.year = this.years[this.value[0]];
          this.month = this.months[this.value[1]];
          this.day = this.days[this.value[2]];
          this.hour = this.hours[this.value[3]];
          this.minute = this.minutes[this.value[4]];
          break;
        case 2:
          this.year = this.years[this.value[0]];
          this.month = this.months[this.value[1]];
          this.day = this.days[this.value[2]];
          break;
        case 3:
          this.year = this.years[this.value[0]];
          this.month = this.months[this.value[1]];
          break;
        case 4:
          this.hour = this.hours[this.value[0]];
          this.minute = this.minutes[this.value[1]];
          break;
        case 5:
          this.hour = this.hours[this.value[0]];
          this.minute = this.minutes[this.value[1]];
          this.second = this.seconds[this.value[2]];
          break;
        case 6:
          this.minute = this.minutes[this.value[0]];
          this.second = this.seconds[this.value[1]];
          break;
        case 7:
          this.year = this.years[this.value[0]];
          this.month = this.months[this.value[1]];
          this.day = this.days[this.value[2]];
          this.hour = this.hours[this.value[3]];
          this.minute = this.minutes[this.value[4]];
          this.second = this.seconds[this.value[5]];
          break;
        case 8:
          this.year = this.years[this.value[0]];
          this.month = this.months[this.value[1]];
          this.day = this.days[this.value[2]];
          this.hour = this.hours[this.value[3]];
          break;
        default:
          break;
      }
      this.isEnd = true
    },
    selectResult() {
      let result = {};
      let year = this.year;
      let month = this.formatNum(this.month || 0);
      let day = this.formatNum(this.day || 0);
      let hour = this.formatNum(this.hour || 0);
      let minute = this.formatNum(this.minute || 0);
      let second = this.formatNum(this.second || 0);
      const type = Number(this.type)
      switch (type) {
        case 0:
          result = {
            year: year,
            result: year
          };
          break;
        case 1:
          result = {
            year: year,
            month: month,
            day: day,
            hour: hour,
            minute: minute,
            result: `${year}-${month}-${day} ${hour}:${minute}`
          };
          break;
        case 2:
          result = {
            year: year,
            month: month,
            day: day,
            result: `${year}-${month}-${day}`
          };
          break;
        case 3:
          result = {
            year: year,
            month: month,
            result: `${year}-${month}`
          };
          break;
        case 4:
          result = {
            hour: hour,
            minute: minute,
            result: `${hour}:${minute}`
          };
          break;
        case 5:
          result = {
            hour: hour,
            minute: minute,
            second: second,
            result: `${hour}:${minute}:${second}`
          };
          break;
        case 6:
          result = {
            minute: minute,
            second: second,
            result: `${minute}:${second}`
          };
          break;
        case 7:
          result = {
            year: year,
            month: month,
            day: day,
            hour: hour,
            minute: minute,
            second: second,
            result: `${year}-${month}-${day} ${hour}:${minute}:${second}`
          };
          break;
        case 8:
          result = {
            year: year,
            month: month,
            day: day,
            hour: hour,
            result: `${year}-${month}-${day} ${hour}:00`
          };
          break;
        default:
          break;
      }
      this.$emit('confirm', result);
    },
    waitFix() {
      if (this.isEnd) {
        this.selectResult()
      } else {
        setTimeout(() => {
          this.waitFix()
        }, 50)
      }
    },
    btnFix() {
      setTimeout(() => {
        this.waitFix()
        this.hide();
      }, 80);
    },
    pickerstart() {
      this.isEnd = false
    }
  }
};
</script>

<style scoped>
.tui-datetime-picker {
  position: relative;
}

.tui-datetime__picker-view {
  height: 100%;
  box-sizing: border-box;
}

.tui-datetime__mask {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.6);
  visibility: hidden;
  opacity: 0;
  transition: all 0.3s ease-in-out;
}

.tui-datetime__mask-show {
  visibility: visible !important;
  opacity: 1 !important;
}

.tui-datetime__header {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transition: all 0.3s ease-in-out;
  transform: translateY(100%);
}

.tui-date-header {
  width: 100%;
  height: 52rpx;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 26rpx;
  line-height: 26rpx;
  /* #ifdef MP */
  box-shadow: 0 15rpx 10rpx -15rpx #efefef;
  /* #endif */
  /* #ifndef MP */
  box-shadow: 0 15rpx 10rpx -15rpx #888;
  /* #endif */
  position: relative;
  z-index: 2;
}

.tui-date-unit {
  flex: 1;
  text-align: center;
}

.tui-show {
  transform: translateY(0);
  opacity: 1;
}

.tui-picker-header {
  width: 100%;
  height: 90rpx;
  padding: 0 40rpx;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
  font-size: 32rpx;
  position: relative;
}

.tui-date-radius {
  border-top-left-radius: 20rpx;
  border-top-right-radius: 20rpx;
  overflow: hidden;
}

.tui-picker-header::after {
  content: '';
  position: absolute;
  border-bottom: 1rpx solid #eaeef1;
  -webkit-transform: scaleY(0.5);
  transform: scaleY(0.5);
  bottom: 0;
  right: 0;
  left: 0;
}

.tui-date__picker-body {
  width: 100%;
  /* height: 520rpx; */
  overflow: hidden;
}

.tui-date__column-item {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36rpx;
  color: #333;
}

.tui-font-size_32 {
  font-size: 32rpx !important;
}

.tui-date__unit-text {
  font-size: 24rpx !important;
  padding-left: 8rpx;
}

.tui-btn-picker {
  padding: 16rpx;
  box-sizing: border-box;
  text-align: center;
  text-decoration: none;
  flex-shrink: 0;
  /* #ifdef H5 */
  cursor: pointer;
  /* #endif */
}

.tui-opacity {
  opacity: 0.5;
}

.tui-pickerdate__title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  padding: 0 30rpx;
  box-sizing: border-box;
  text-align: center;
}
</style>
